Wet/dry utility vacuum cleaner
CA 2113522 C · Owner: Bowers, Donald R. · Inventors: Koukourakis, Nicholas; Bosyj, Nick M.; Bowers, Donald R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention teaches a utility wet/dry, tank type, vacuum cleaner suitable for domestic use whereby wet or dry material may be alternately vacuumed. Two storage or receiving chambers are provided, preferably positioned one within the other. Two suction inlets, one communicating with the first chamber and the other communicating with the second chamber are provided such that wet and dry material may be selectively directed, by the user, to the appropriate chamber for collection.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 14, 1994 and granted January 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.